An executor makes the estate fiscal year election by choosing any month-end that falls within 12 months of the date of death and filing the estate’s first Form 1041 on that cycle. No separate election form exists; the year-end reported on that first return locks the choice in, and changing it later requires IRS approval that is rarely granted. Picked well, a fiscal year can push beneficiaries’ tax on distributed income out by close to a full year.
What Year-Ends an Estate Can Choose
An estate is a separate taxpayer, and unlike an individual it is not tied to December 31. The executor can adopt a calendar year, or a fiscal year ending on the last day of any other month.1Internal Revenue Service. Tax Years
The estate’s first tax year always begins the day after death. It can close on the last day of any month within the following 12 months. If the decedent died on March 20, the first year-end can be any month-end from March 31 of that year through February 28 (or 29) of the next. That first return will almost always be a short year, because it starts mid-month.2Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
After the first year closes, the estate stays on that annual cycle. A January 31 year-end means every subsequent year runs February 1 through January 31 until the estate terminates.
How to Make the Election
Before anything gets filed, the estate needs its own Employer Identification Number. The executor applies on Form SS-4, which can be done online for an instant EIN, by fax in about four business days, or by mail in four to five weeks. Line 12 asks for the closing month of the accounting year, so the fiscal year has to be decided before the EIN application is submitted.3Internal Revenue Service. Instructions for Form SS-4 (12/2025)
The election itself is made by filing the first Form 1041. The tax year shown on that return is the estate’s tax year going forward. The return is due by the 15th day of the fourth month after the year-end: May 15 for a January 31 fiscal year, April 15 for a calendar year.2Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
Once that return is filed, the choice is effectively permanent. This is why the decision deserves real analysis before the first filing deadline, not a rushed pick to get the return out the door.
What the Right Year-End Can Save
The payoff comes from a timing gap. A beneficiary reports estate income on the personal return for the calendar year in which the estate’s fiscal year ends. Pushing the estate year-end later into the calendar year pushes the beneficiary’s reporting obligation further out.4Internal Revenue Service. Instructions for Schedule K-1 (Form 1041) for a Beneficiary Filing Form 1040 or 1040-SR (2025)
Take a death on June 15, 2026. A calendar year makes the first estate year run from June 15 through December 31, 2026; income distributed in that window lands on beneficiaries’ 2026 returns due April 2027. A fiscal year ending May 31 instead runs from June 15, 2026 through May 31, 2027; distributed income falls into beneficiaries’ 2027 tax year and isn’t reported until April 2028. That’s roughly 11 months of additional deferral for the same dollars.
The earlier in the calendar year the decedent died, the more flexibility there is. A January death offers close to 11 months of deferral to play with. A late-November death offers almost none. Deferral is not the only consideration — beneficiaries with lumpy income of their own may prefer estate income to land in a particular year, and a large one-time event like a real estate sale may drive the choice — but the year-end is the lever.
Why Executors Push Income Out to Beneficiaries
Estates hit the top federal bracket almost immediately. For 2026, the 37% rate begins at about $16,000 of taxable income, and the schedule looks like this:
- 10% up to $3,300
- 24% from $3,300 to $11,700
- 35% from $11,700 to $16,000
- 37% over $16,000
An individual filer wouldn’t reach 37% until roughly $626,350. Even modest investment income compounds fast at the estate level, and the $600 personal exemption barely helps.5Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
The estate must file Form 1041 in any tax year it generates $600 or more of gross income.6Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 (2025) Distributing income to beneficiaries shifts it to their (usually lower) brackets through the income distribution deduction, which is capped at the estate’s distributable net income (DNI). DNI is the ceiling on both what the estate can deduct and what beneficiaries can be taxed on, computed on Schedule B of Form 1041.7Internal Revenue Service. SOI Tax Stats – Definitions of Selected Terms and Concepts for Income From Trusts and Estates
The 65-Day Rule Works With the Fiscal Year Choice
Executors rarely know an estate’s final income numbers on the last day of the tax year. Section 663(b) lets the executor treat distributions made during the first 65 days of the new tax year as if they were made on the last day of the prior year.8United States Code. 26 USC 663 – Special Rules Applicable to Sections 661 and 662
The window runs through March 6 for a calendar-year estate and through April 6 for a January 31 fiscal year. The election is made each year by checking a box on Form 1041, so the executor can look at the actual numbers, decide how much to distribute, and pull the trigger before the 65 days run out. Combined with a well-chosen fiscal year, it turns distribution planning from a guessing game into an after-the-fact calculation.
Bringing a Revocable Trust Onto the Estate’s Fiscal Year
Where the decedent’s assets pass mostly through a revocable living trust rather than probate, the trust normally has to use a calendar year. A Section 645 election lets the trust be treated as part of the estate for income tax purposes, so it can adopt the estate’s fiscal year and file a single combined Form 1041 with the estate.
The executor and trustee file Form 8855 by the due date of the estate’s first Form 1041, including extensions.9Internal Revenue Service. Form 8855 – Election To Treat a Qualified Revocable Trust as Part of an Estate Both entities still need their own EINs. The election is irrevocable.
The combined-filing period ends two years after the date of death if no federal estate tax return is required. If a Form 706 is required, it lasts until the later of two years after death or six months after the final determination of estate tax liability.10govinfo.gov. Election To Treat Trust as Part of an Estate After that, the trust files on its own calendar year. For estates where the trust holds most of the wealth, skipping this election forfeits the fiscal year deferral for the bulk of the income.
Estimated Taxes in the First Two Years
Estates are exempt from estimated tax payments for any tax year ending before the second anniversary of the decedent’s death. For a March 2026 death, the first tax year in which estimates could be owed is one ending on or after March 2028. Grantor trusts that will receive the residue of the decedent’s estate qualify for the same two-year window, which is the common setup when a Section 645 election is in place.11Office of the Law Revision Counsel. 26 USC 6654 – Failure by Individual To Pay Estimated Income Tax
After the exemption ends, the estate must make quarterly payments on Form 1041-ES if it expects to owe $1,000 or more after withholding and credits.12Internal Revenue Service. 2026 Form 1041-ES – Estimated Income Tax for Estates and Trusts Underpayments are penalized quarter by quarter.
How Beneficiaries Report Under a Fiscal Year
Every beneficiary who receives a distribution gets a Schedule K-1 breaking their share of the estate’s income into categories — interest, dividends, capital gains, rental income — for reporting on the personal return.4Internal Revenue Service. Instructions for Schedule K-1 (Form 1041) for a Beneficiary Filing Form 1040 or 1040-SR (2025)
The rule that drives the deferral: a beneficiary reports estate income on the personal return for the calendar year in which the estate’s fiscal year ends, no matter when during that fiscal year the distribution actually arrived. An estate year closing September 30, 2027 puts everything on the beneficiary’s 2027 return, due April 2028.4Internal Revenue Service. Instructions for Schedule K-1 (Form 1041) for a Beneficiary Filing Form 1040 or 1040-SR (2025)
State treatment generally follows the federal fiscal year, though a few states have quirks around short-period returns in the first year. Beneficiaries in income-tax states should confirm their state accepts the estate’s federal year for reporting.
How Long the Estate Can Stay Open
An estate remains a separate taxpayer only for the period reasonably needed to collect assets, settle debts and claims, and distribute what’s left. If administration drags on without a legitimate reason, the IRS can treat the estate as terminated for tax purposes, and income, deductions, and credits pass straight to the beneficiaries.2Internal Revenue Service. Publication 559 (2025), Survivors, Executors, and Administrators
There is no fixed deadline. Complex estates with litigation, contested claims, or illiquid assets legitimately take longer, and no year-end choice extends the estate’s life beyond what the administrative work supports. Keeping an estate open purely to defer beneficiary taxes will draw scrutiny; the fiscal year election works within the estate’s real lifespan, not around it.